User Manual

16
3 Phase Orientaon
Once connected, we need to adjust for phase. This may be the single most crical step, and because
it really is quite simple, it is oen over-thought. Keep in mind; the right phase is whichever posion is
the loudest or fullest. While playing music with true low bass, adjust the crossover to a point where the
REL and the speaker are sure to share frequencies at 50Hz on the crossover control, or slightly higher
for smaller speakers. At this point turn the HI/LO LEVEL control up so that both the REL and speaker are
roughly equal in volume and then switch, using the phase switch, from “0” to “180” phase posions.
Again, whichever posion is loudest or fullest is the correct posion. That is, when the posion is working
in harmony with your main speakers, reinforcing bass, not canceling it.
4 Crossover and Level Sengs:
To determine the crossover point, take the volume of your Predator (using the Level control) all the way
down, and set the crossover to 3 o’clock. At this point, bring the REL’s volume back up slowly to the point
where you have achieved a full, rich balance, i.e. the point at which you can just hear the Predator even
with the main speakers playing. Now gently reduce frequency to the appropriate seng, one that reduces
room boom yet sll oers huge output. For all intents and purposes, this is the correct crossover point.
Once this stage has been reached, subtle changes to volume and crossover may be accomplished to
provide the last bit of complete and seamless integraon. With that, set-up is complete.
Hint: There may be a tendency to set the crossover point too high and the volume of the Sub-Bass System
too low when rst learning how to integrate a REL with the system, the fear being one of overwhelming the
main speakers with bass. In making this common error, the resulng set-up will be lacking in bass depth and
dynamics. The proper crossover point and volume seng will increase overall dynamics, allow for extended
bass frequencies, and improve soundstage properes. Note, volume adjustments may need to be made to
oset the eects of crossover changes. In general, when selecng a lower crossover point, more volume may
need to be applied. Higher crossover frequencies will generally necessitate less gain.